4.8 Article

Self-Assembly and Charge-Transport Properties of a Polythiophene-Fullerene Triblock Copolymer

Journal

ADVANCED MATERIALS
Volume 22, Issue 16, Pages 1835-+

Publisher

WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200902696

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Funding

  1. Mitsubishi Chemical Center for Advanced Materials (MC-CAM) at the University of California, Santa Barbara
  2. National Science Foundation

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A rod coil triblock copolymer consisting of a poly(3-hexylthiophene) (P3HT) rigid block, a styrene coil block, and a coil block with fullerene pendant group has been synthesized (see figure). Nanofibers in films reach 250 nm in length and 10.7 nm in width. Photo- and dark-current imaging by conducting atomic force microscopy reveals that the fibers are highly conductive. The electron and hole mobilities are comparable with a P3HT:fullerene-derivative blend.

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